Toyota CH-R Service Manual: Initialization

NOTICE:

• Performing Reset Memory will clear the learned value of the yaw rate and acceleration sensor (deceleration sensor zero point calibration) and the CVT oil pressure (CVT oil pressure calibration). Make sure to perform Reset Memory, yaw rate and acceleration sensor zero point calibration, and CVT oil pressure calibration when replacing any of the parts shown in the following table.

  Replaced Part
  Continuously variable transaxle assembly ECM Oil pressure sensor Airbag sensor assembly (Yaw rate and acceleration sensor)

• After performing Reset Memory, always perform yaw rate and acceleration sensor (deceleration sensor zero point) calibration first, and then CVT oil pressure calibration.

NOTICE:

• Keep the vehicle stopped, level and stable during the calibration (Inclination: 0 +/- 0.25°).
• Make sure that the shift lever is in P.
• Make sure that the engine is stopped. To prevent idling vibrations, do not start the engine.
• Make sure that the ignition switch is ON.

HINT:

• When "Complete" is displayed on the screen, deceleration sensor zero point calibration is complete.
• If "Error" is displayed on the screen and DTC P1589 is output (for the detection conditions for DTC P1589), refer to P1589, as the deceleration sensor circuit may be malfunctioning.

  Click here

• Shaking or vibrating the vehicle during deceleration sensor zero point calibration may cancel calibration. If "Error" is displayed on the screen and DTC P1589 is not output, perform calibration again.

• Oil pressure sensor value is 0.065 MPa (0.663 kgf/cm2, 9.43 psi) or higher.
• CVT oil temperature is -5°C (23°F) or less or 120°C (248°F) or higher.

HINT:

• During CVT oil pressure calibration, the engine idle speed will increase.
• When "Complete" is displayed on the screen, CVT oil pressure calibration is complete.
• The learned values cannot be cleared by only disconnecting and reconnecting the cable to the negative (-) battery terminal.

• The CVT fluid has been replaced.

  HINT:

  If 50000 or more is displayed for the Data List item "ATF Thermal Degradation Estimate", thermal degradation of the CVT fluid is suspected. Perform ATF Thermal Degradation Estimate Reset after replacing the CVT fluid.

• Approximately 50% or more of the CVT fluid has been replaced during a repair of the transaxle or a similar operation.

Hydraulic Test

Problem Symptoms Table

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